/*
 * Copyright (C) 2012 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.ros.android.view.camera;

import com.google.common.base.Preconditions;

import java.io.IOException;
import java.io.OutputStream;

/**
 * @author damonkohler@google.com (Damon Kohler)
 */
public class FixedByteArrayOutputStream extends OutputStream {

  private byte[] buffer;
  private int position;

  public FixedByteArrayOutputStream(int capacity) {
    buffer = new byte[capacity];
  }

  @Override
  public void write(int b) throws IOException {
    Preconditions.checkArgument(position < buffer.length);
    buffer[position++] = (byte) b;
  }

  public byte[] getBuffer() {
    return buffer;
  }

  public int getPosition() {
    return position;
  }

  public void reset() {
    position = 0;
  }
}
